Hello- I have been dealing with this issue for several years, and would like to figure out a way to solve it once and for all. The rear wheels on my 2005 Sentra are not aligned properly, and there is no adjustment possible. Drivers side is toed in and passenger side is toed out, the most significant issue being the passenger side. Even with tire rotations, I wear the inside of the right rear enough to require replacement in 25K miles. I have had the car to alignment shops from Virginia to California, and they all find the problem and they all tell me there is no adjustment (which I know to be true). I have received recommendations including 1) just keep putting tires on it; 2) replace the entire rear assembly; 3)take it to a frame machine and let them try to bend it.
I have not had much luck finding anyone that has taken the frame machine approach. The rear is not a straight axle, but a torsion beam assembly. I am not sure bending on that is advisable, or will yield the desired results. So I come to the community for some comments and advice. Thanks.